feat: chat in explore support agent (#647)

Co-authored-by: StyleZhang <jasonapring2015@outlook.com>

web/context/event-emitter.tsx

@@ -0,0 +1,28 @@
+'use client'
+
+import { createContext, useContext } from 'use-context-selector'
+import { useEventEmitter } from 'ahooks'
+import type { EventEmitter } from 'ahooks/lib/useEventEmitter'
+
+const EventEmitterContext = createContext<{ eventEmitter: EventEmitter<string> | null }>({
+  eventEmitter: null,
+})
+
+export const useEventEmitterContextContext = () => useContext(EventEmitterContext)
+
+type EventEmitterContextProviderProps = {
+  children: React.ReactNode
+}
+export const EventEmitterContextProvider = ({
+  children,
+}: EventEmitterContextProviderProps) => {
+  const eventEmitter = useEventEmitter<string>()
+
+  return (
+    <EventEmitterContext.Provider value={{ eventEmitter }}>
+      {children}
+    </EventEmitterContext.Provider>
+  )
+}
+
+export default EventEmitterContext